What if Lite Brite and a tablet PC had a crazy love child? It might look something like the Yamaha Tenori-On. The basic idea is, you press buttons on a 16×16 LED grid and trigger sounds and visuals; there are collaborative features for playing with your friends Tenori-Ons, and the back of the screen functions as an LED, so instead of a private trippy experience, everyone can see the fun.